133391227 has 2 divisors, whose sum is σ = 133391228. Its totient is φ = 133391226.

The previous prime is 133391177. The next prime is 133391243. The reversal of 133391227 is 722193331.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (722193331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133391227 is a prime.

It is not a weakly prime, because it can be changed into another prime (133397227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66695613 + 66695614.

It is an arithmetic number, because the mean of its divisors is an integer number (66695614).

Almost surely, 2^133391227 is an apocalyptic number.

133391227 is a deficient number, since it is larger than the sum of its proper divisors (1).

133391227 is an equidigital number, since it uses as much as digits as its factorization.

133391227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 31.

The square root of 133391227 is about 11549.5119810319. The cubic root of 133391227 is about 510.9468850013.

The spelling of 133391227 in words is "one hundred thirty-three million, three hundred ninety-one thousand, two hundred twenty-seven".